Swingcatt,
It is my opinion that in a .45 acp, the compensator is of limited usefulness, and a bushing compensator even more so.
If you want to spend the few dollars as an experiment, that would be fine, but if you expect a significant recoil reduction, I think you will be disappointed.
just my .02 worth
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Ni ellegimit carborundum esse!
Yours In Marksmanship
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michael